Modem truyền số liệu cáp đồng 2 wires, giao tiếp E1-V35, nguồn cấp 220VAC.
Hãng sản xuất: RAD Datacommunication
Xuất xứ: Israel
ASMI-52/AC/M/IP/4W ASMI-52/AC/M/UTP/Q/2W ASMI-52/AC/M/UTP/Q/4W ASMI-52/AC/M/V35/2W
ASMI-52/AC/M/V35/4W ASMI-52/AC/S/IP/4W ASMI-52/AC/S/UTP/Q/2W ASMI-52/AC/S/UTP/Q/4W
Dedicated G.SHDSL modem with remote management
Operates over 2-wire and 4-wire lines, enabling service over any copper infrastructure
Utilizes TC-PAM line coding for extending the operation range to 12.0 km (7.4 miles) and eliminating the need for repeaters
Operates at multiple data rates between 64 kbps and 2048 kbps enabling single-platform system upgrades
Supports X.21, V.35, G.703/G.704 E1 and Ethernet interfaces, allowing connection to different DTE types
Supports embedded operation channel for end-to-end system management and supervision as per ITU-T G.991.2
Provides extensive diagnostics, including loopbacks, G.SHDSL and E1 performance monitoring
ASMi-52, G.SHDSL modem, operates in full duplex mode over 2-wire and 4-wire lines.
ASMi-52 supports multiple data rates: n x 64 kbps (n = 1, 2, …, 32), or n x 128 kbps (n = 1, 2, …, 16). The data rates depend on the line interface and DTE interface types.
ASMi-52 employs standard G.SHDSL TC-PAM technology to extend the transmission range (see Table 1 and Table 2), enabling the carrier to reach more customers at lower cost.
ASMi-52 supports X.21, V.35 and G.703/G.704 E1 interfaces. In addition, the modem supports Ethernet interface modules with a built-in bridge (IR-ETH/Q) or an IP router (IR-IP), which allow LAN-to-LAN connectivity using G.SHDSL technology.
The modem uses an Embedded Operation Channel (EOC) for controlling and monitoring the remote unit. The management channel uses G.SHDSL overhead bits, operating without interfering with the data transmission in compliance with the ITU-T G.991.2 requirements.
ASMi-52 is managed via an ASCII terminal connected to the modem’s supervisory port by an embedded menu-driven software.
ASMi-52 has comprehensive diagnostics capabilities that include the following test options:
Real-time alarms to alert user on fault conditions
V.54 local analog and remote digital loopbacks
G.SHDSL and E1 statistics collection for 15-minute and day intervals.
The modem provides high voltage line protection in compliance with ITU K.21 and UL1950.
2/4-wire unconditioned dedicated line (twisted pair)
• Line Coding
See Table 1 and Table 2
ETSI 101 524
As per ITU K.21 and UL1950
RJ-45 and 5-clip terminal block
X.21, 15-pin, D-type, female
V.35, 34-pin, female
G.703/G.704 E1, RJ-45 or BNC
IR-ETH/Q (Ethernet bridge with
VLAN support), RJ-45
IR-IP (IP router), RJ-45
• Data Rate
Depends on the DTE interface type and number of line wires:
nx 64 kbps (n = 1, 2, …, 32)
nx 128 kbps (n = 1, 2, …, 16)
• E1 Coding
• E1 Line Impedance
12 0 , balanced
7 5 , unbalanced
7 or 8 bits; odd, even or no parity
• Baud Rate
9.6, 19.2, 38.4, 57.6, 115.2 kbps
9-pin, D-type, female
Derived from the following
External, from the attached DTE
Receive, derived from the received signal
Note: Slave units support only receive timing.
Local analog loopback in compliance with ITU V.54
Remote digital loopback in compliance with ITU V.54
G.SHDSL statistics collection
E1 with CRC-4: per ITU G.706
E1 without CRC-4: BPV
PWR (green) Œ Power
DATA (yellow) Œ Transmit data (V.35 interface only)
SYNC A/B (green/red) Œ Sync status of DSL line
E1 SYNC (red) Œ Loss of E1 sync (E1 interface only)
AIS (yellow) Œ iyAll 1s stringl) is received (E1 interface only)
ALM (red) Œ An alarm enters the buffer
TST (red) Œ Test is in progress
Height: 47.3 mm / 1.8 in
Width: 214 mm / 8.4 in
Depth: 125 mm / 4.9 in
Weight 0.5 kg / 1.1 lb
AC: 100 to 240 VAC ( 10%), 50 to 60 Hz, 17 VA max
DC: -48 VDC (-36 to -72 VDC), 7W max
• Power Consumption
5W (4-wire) or 4W (2-wire)
Temperature: 0-50 C/32-122 F
Humidity: Up to 90%, non-condensing
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